Quote Originally Posted by JAZZCNC View Post
If your wanting to use the existing drives then you'd need to check out what they require. Thou I suspect you'll get much better performance and easier conversion if you upgrade the drives.
The existing drivers are built into what is essentially the Next-Step BOB. The Next-Step control board itself sits above and is connected by two large pin headers to a connection board with three stepper drivers and required power supplies built in. You can use the existing drivers by simply patching into the pin headers, but they're pretty basic drivers, although they're good enough for the machines they're fitted to. You will get better performance by fitting new drives though.